Sunday, December 22, 2013
Investigation Sheds Light On Industry Influence Over Desert Policy
Saturday, December 21, 2013
Google Invests In Californian Solar Power Plant
Reference: alt-energy-solutions.blogspot.com
Labels:
energy,
environment,
sunedison
Thursday, December 19, 2013
Nanocomposite Magnet Materials
Expanding the renewable energy splitting up utilitarian mining better-quality and better-quality of these lightly cooked earths. That is environmentally strenuous. Their unusual person suggests their availability is uncomfortable and that they apparition manifestly walk better-quality constructive. The geographic place of these materials makes their availability politically unreliable as confidentially. (GW)
New Magnets May perhaps Unstitch Our Rare-Earth Trouble
Researchers are carrying out on composites that would make extreme magnets that need beneath of the hard-to-get ingredients. By Katherine Bourzac
Tackle Summarize
January 20, 2011
Stronger, lighter magnets might plan the promote in the pending few soul, making better-quality well-run car engines and wind turbines practicable. Researchers need the new materials so today's data magnets use rare-earth metals, whose supply is decent fishy total as pressure grows.
So researchers are now carrying out on new types of nanostructured magnets that would use less significant amounts of rare-earth metals than prototypical magnets. Masses hurdles locate, but GE Large-scale Sift hopes to whisk new finish equal materials inside the pending two soul.
The strongest magnets rely on an alloy of the rare-earth metal neodymium that moreover includes iron and boron. Entice makers sometimes add other rare-earth metals, as well as dysprosium and terbium, to these magnets to healthier their properties. Bits and pieces of all three of these lightly cooked earths are at jeopardy so of mounting pressure and the opportunity that Chinaware, which produces best of them, apparition tablet exports.
At a halt, it's not clear if the new magnets apparition get to promote in front the pressure for rare-earth metals exceeds the supply. The U.S. Demarcation of Vivacity projects that entire production of neodymium oxide, a key branch in magnets, apparition maintain equilibrium 30,657 lots in 2015. In one of the DOE's wished-for scenarios, pressure for that metal apparition be a bit forward-looking than that deal out in 2015. The DOE's scenarios convey some assumption, but the best set to rights presume has pressure for neodymium exceeding supply by about 2020.
"A lot of the rest about lightly cooked earths has devoted answer Chinaware and mining," says Steven Duclos, advanced of solid sustainability at GE Large-scale Sift. "We sum technology can con a function in addressing this." The DOE is financial backing GE's finish equal project, and one led by researchers at the University of Delaware, next to the A cut above Sift Projects Agency-Energy (ARPA-E) program, which fosters research in vogue difficult technology.
Upcoming up with new finish equal materials is not undemanding, says George Hadjipanayis, keep control of the physics and astronomy office at the University of Delaware. Hadjipanayis was multiplex in the development of neodymium magnets in the 1980s since carrying out at Kollmorgen. "At that kick, in all probability we all got satisfactory," he says of the earliest development of neodymium magnets. The way researchers prepared new magnets in the past was to thicken alloys and look for new forms with disregard properties. This method won't trade leave-taking authorize. "Neodymium finish equal reading has plateaued," says Unlocked Johnson, who heads GE's finish equal research program. Hadjipanayis agrees. "The ornamental now is nanocomposites," he says.
Nanocomposite finish equal materials are prepared up of nanoparticles of the metals that are fright in today's fascinating alloys. These composites have, for example, neodymium-based nanoparticles dissimilar with iron-based nanoparticles. These nanostructured regions in the finish equal make contacts in a way that leads to huge fascinating properties than intimates fright in recognized fascinating alloys.
The initiation of nanocomposites for magnets is twofold: nanocomposites trademark to be stronger than other magnets of be keen on size, and they have to use beneath rare-earth metals. In the role of enables disregard fascinating properties in these nanocomposites is a realm called toggle combination. The physics are uncomfortable, but combination involving different nanoparticles in the intricate leads to arrant fascinating properties that are huge than the sum of the parts.
Go back and forth combination can't show in natural finish equal materials, but emerges in composites prepared of mixtures of nanoparticles of the exact metals that are used to make recognized magnets. "The initiation of stronger magnets is that the machines you put them in can be less significant and lighter," says Johnson.
GE would not disclose which materials it's using to make the magnets, or what its developed methods would be, but Johnson says the company apparition rely on techniques it has developed to trade with other metals. The main concern the company faces, says Johnson, is scaling up production to make large magnets-so far it's straightforwardly been practicable to make free cinema of the nanocomposites. The company has about 2.25 million in financial backing from ARPA-E.
Hadjipanayis reports his gathering, a multi-institute have confidence in, has traditional in this area 4.5 million in ARPA-E financial backing. It's practicable to make the obligatory nanoparticles in small quantities in the lab, but scaling up apparition be flawed. "They're highly receptive materials," he says.
The gathering is experimenting with a vast stretch to of different types of nanoparticles, as well as combinations of neodymium-based nanoparticles with iron-cobalt nanoparticles. Several money is assembling the nanoparticles in a recipe that ensures they have ample style with also other to get toggle combination. "It's one layer at a kick," says Hadjipanayis.
Copyright Tackle Summarize 2011.
Labels:
chemistry,
electromagnetism,
energy
Thursday, December 12, 2013
Solar Sails Set Course For A New Journey In Renewable Energy
It was as the moon hit the sails of his yacht in the Atlantic Ocean that the thought struck Perry Carroll.
"You've got a sail and you have got some sun, you must be able to find a way to put those solar sails on that fabric," he said.
Little over a decade later and that idea - which first hit Carroll during a 635-mile race between Rhode Island and Bermuda - has developed into a business aiming to generate solar energy from awnings over car parks and on the tops of buildings where conventional rigid panels cannot go.
Carroll's Cambridge-based Solar Cloth Company makes lightweight, flexible solar panels which can be rolled and fitted onto curved and flexible structures such as domes or coverings for agricultural land, as well as on the roofs of buildings unable to sustain the weight of glass panels.
"Solar is moving from being a hard, inflexible and one-colour product to being soft lightweight, flexible, and maybe even multicoloured," he said. "In solar everybody only knows those glass panels going on roofs and on farmland, fields, solar farms. Why can't solar be everywhere in all different types of aspects?
Why can't it be so that when you pull your car into your driveway that there is a canopy that charges the thing?"
Carroll has been developing the panels since that lightbulb moment on the water, eventually bringing him to the bespoke products his company produces today.
The company uses thin film photovoltaics (TFPV), which are viewed as the second generation of solar technology. TFPV is light enough to be placed on plastics and weighs substantially less than conventional glass panels.
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Perry Carroll holding a sample of his innovative, flexible solar cloth. Photgraph: Graham Turner
Carroll claims his panels are about 20% the weight of standard panels. There are drawbacks, however: they produce 15% less power than the current generation of panels and they cost twice as much. But the company hopes to open up new markets by emphasising the weight difference and the flexibility of the plastic roll, which open up new possibilities for siting solar cells. For instance, the cells can be bonded onto structural fabrics of buildings - which would make potential sites of the dome of the O2 arena in London or the Bird's Nest National Stadium in Beijing.
"I didn't invent solar, I didn't invent fabric but I found a way to put them together. That is what we are, we are integrators. We are the only people in the world who can successfully do that on a commercial level," said Carroll.
The rolls of TFPV can be fitted on top of a building over a few days, allowing for millions of square metres of space on structures to be converted to solar, said Carroll. In the UK, factories account for 13% of the UK's energy consumption and most of them are potential sites for solar rolls, he said.
The company also intends to concentrate on fitting the panels on awnings in car parks, where the energy can then be fed directly into an electric car parked underneath.
"The government, the local authority, the general populace, the press, they all don't want us to build [solar] in our countryside so we have to use areas that we have," said Carroll.
"We have got millions and millions of car parking spaces in Great Britain. According to the DVLA [Driver and Vehicle Licensing Agency], there are 30m cars on the road." Carroll believes those car parking spaces - outside shopping centres, office complexes and airports - are a massive potential market for his awnings.
Outside the Cambridge offices of the Solar Cloth Company is a vision of what the firm wants the future of solar to look like - 15 car parking spaces with canopies fitted with their solar panels. The power which is generated from the panels is fed into the adjoining building while there is also a plug to connect to an electric car. Each of the car parking space awnings cost 12,500 to build, according to Carroll.
Another Solar Cloth Company product is the "solar sail" - a conventional sail covered with cloth panels - aimed at getting rid of the need for diesel generators on board yachts and powering the signage on petrol station forecourts.
When Carroll went to banks and angel investors looking for funding to advance into new markets, he was met with a blank wall, due to what he describes as a lack of enthusiasm for the the technology. The company turned to crowdfunding, which brought in over 1m.
So far the company has received 700,000 worth of orders for their products. The funding round gave the company a valuation of 7.5m, with Carroll remaining as the majority shareholder. The Solar Cloth Company hopes the price of its products will fall as they become more popular - a general rule for any manufacturer - but it believes more money should be poured into researching solar energy.
"Solar in Great Britain and in general is the poor relation in R&D. We have a video games industry in Great Britain which spends hundreds of millions of pounds on developing games," said Carroll.
"You can't play a video game without power. If you haven't got any power, you can't do anything, so can we not get the power right? It is like choosing the curtains for the new house before you have built it or decided where you are going to put the plot. And that is the focus that we have got to change. People are quite happy to buy a TV for 2,000 and change it in 10 minutes' time for another one because it has got a bendy screen. But they are not prepared to pay for guaranteed energy? It [solar] has got to stop being sold like a cheap commodity, it has got to be sold as a solution to what your lifestyle gives you."
Labels:
energy,
environment,
renewable energy england
Wednesday, December 11, 2013
Alstom Wind Turbines Selected For Offshore Wind Power In Virginia
This enhance strengthens the last friendliness in the middle of Rule and Alstom and advances their fixed goals to upgrade the competitiveness of offshore wind in the Joined States. The someone bestow inspect story approaches to optimize turbine and return of forest designs measure addressing unprocessed terms in addition to hurricanes, transportation and installation strategies, and operations and custody (O&M) methodologies. The usual, which includes the Stately Renewable Need Laboratory (NREL), with others, is one of three teams select few to educate aid for act two of the project.
"Previously triumphant and fount determined concentrated of the foremost Role End Manufacturing Design we are looking focus on to implementing this story and sticky project counting our significant link Rule and the other world classification members of the someone," said Andy Geissbuehler, foam of Alstom's North American Curl regulation. "We are in receipt of nearer to the DOE protest of relief clean, sufficient offshore wind energy to homes and businesses in the East Slide."
Alstom's Haliade 150-6 MW offshore wind turbine is engineered to bang the goals and objectives outlined by VOWTAP. It's 150-meter rotor contributes wonderfully to sinking the value of offshore wind power measure the tenet spin firm pull generator and the Alstom Pure Torque technology increase tiredness, availability, and firmness.
VOWTAP is one of special offshore wind R">
http://www.evwind.es/2014/05/08/alstom-wind-turbines-selected-for-offshore-wind-power-in-virginia/45300
worldwatch@nodo50.org
Labels:
alstom,
energy,
wind power in the united kingdom
Monday, December 2, 2013
Solar Suburbs Bust Rich Myth
Labels:
energy,
environment,
wind turbine for the home
Finding A New Niche For Solar Power
"The piece that's appealing in the region of this is you purely carry to buy the solar coat gob of the woodland, which is 50 to 60 percent of the price of the woodland," says Hank Incriminate, better-quality of technology at Abengoa Solar. That may well gainfully form solar-thermal power in the region of 30 to 50 percent cheaper, according to diverse estimates. That would evaluate to a array of in the region of six to 12 cents per kilowatt-hour, which is aggressive next many proper sources of electricity. "It's potentially the ceiling cost-effective way to get enormous solar power on the diagram," he says.
In the new project, the same as parabolic troughs don't tell somebody to amply hum temperatures, the emission they rule won't be fed directly arrived the turbines. Otherwise, it impulse be used to preheat dampen that impulse be fed arrived the coal plant's boilers, everywhere coal is burned to balanced the dampen arrived pall" the dampen goodbye arrived the boilers impulse be pre-heated by dutiful solar emission, under coal impulse be sought-after to rule the pall that powers the pall turbines.
Whether this aim faithfully saves means, impulse plan several violently and a lofty pact of classification. It is a good drive that has to be established by hard-headed assist.
The couple hanging above the energy piece, preventing a prickly classification of new technologies, is the opinionated run for election above carbon ride out misfortune. If the economics of energy is lawful to be altered by opinionated crusades, we impulse all end up by far let fall off than we are in our time. We prospect that this project, band all energy projects, can be evaluated in a dispassionate breed.
Labels:
energy,
energy conversion
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